[IMP] add module for hiding unwanted feature

sale_no_preview_button/views/sale_view.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+
+<record id="view_order_form" model="ir.ui.view">
+    <field name="model">sale.order</field>
+    <field name="inherit_id" ref="sale.view_order_form"/>
+    <field name="arch" type="xml">
+        <button name="preview_sale_order" position="attributes">
+            <attribute name="invisible">1</attribute>
+        </button>
+    </field>
+</record>
+
+</odoo>